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Halowerk MCP Server

local only

Halowerk MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 58 installs a week from npm. Last commit 12 Aug 2026.

134 paid APIs as MCP tools, billed per call in USDC on Base. No account, no login.

Installs per day peak 15 · avg 6 · +46% w/w
a month agotoday
58
Installs / week
npm · halowerk-mcp
0
Stars
0 open issues
12 Aug 2026
Last commit
2 releases in 90 days
MIT
License
JavaScript

Nothing serious here today

Today is the operative word: we check Halowerk MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add halowerk-mcp -- npx -y halowerk-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "halowerk-mcp": {
      "args": [
        "-y",
        "halowerk-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.halowerk-mcp]
command = "npx"
args = ["-y", "halowerk-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "halowerk-mcp": {
      "args": [
        "-y",
        "halowerk-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "halowerk-mcp": {
      "args": [
        "-y",
        "halowerk-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: HALOWERK_PRIVATE_KEY (Private key of the paying wallet, hex with or without 0x. Use a throwaway wallet holding only a few dollars of USDC on Base. Without it, only the free catalogue and price tools work.), HALOWERK_MAX_PREIS_USDC (Ceiling per call in USDC. A more expensive service is refused, not bought. Default 0.05.), HALOWERK_BUDGET_USDC (Ceiling per session in USDC. Once reached the server refuses further paid calls. Default 1.00.), HALOWERK_MODUS (hero (12 curated services, default), gateway (3 meta-tools, smallest context) or all (70 services).), HALOWERK_TROCKEN (Set to 1 for a dry run: returns price and call plan, pays nothing.). The author declared them in the registry entry; get the values from the project itself.

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Halowerk MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Halowerk MCP?
Halowerk MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package halowerk-mcp was installed 58 times last week.
How do I connect Halowerk MCP?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls halowerk-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Halowerk MCP?
The npm package halowerk-mcp was installed 58 times in the last week. Week over week that is +46%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Halowerk MCP open source?
Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.